Inking device for printing and marking machines.



W. P. EGAN & J. J. SHEEHAN.

INKING DEvIcE'FoR PRINTING AND MARKING MACHINES.

APPLICATIONv FILED JUNE 28,'1913.

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fm1.. @ZA/w THE COLUMBIA PLANUGRAPH cn.. WASHINGTON. D. c.

W. P. EGAN &1. I. SHEEHAN.

INKING DEVICE FOR PRINTING AND MARKING MACHINES.

APPLlcATloN FILED JUNE 28.1913.

Patented Feb. 29, 1916.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

WILLIAM P. EGAN AND JOHN J. sHnEAHAN, or" LYNN, MASSACHUSETTS.

INKING DEVICE FOR PRINTING AND MARKING- MACHINES.

Speccation of Letters Patent.

Patented Feb. 29, 1916.

Application filed .Tune 28, 1913. Serial No. 775,458.

and Marking Machines, of which thek yfol-k lowing is a specification.

This invention relates to improvements in inking devices for printingand marking machines and its `principal object is to provide meanswhereby an ink pad of the lusual type may be shifted at intervals topermit the type to engage different portions ofthe surface of the padthereby obtaining greater efficiency and economy in the distribution ofthe ink. In this device the wearis distributed more evenly over thesurface of the pad, consequently the pad can be used .for a longer timethan in the usual method of inking.

Mechanism is herein provided for auto- Inatically shifting the positionof the pad by a step movement at each. impression of the type and forautomatically` reversing the direction of the movement at regularAintervals, Y Y

In the accompanyingl drawings isillustrated a form of constructionembodying,l

thisinvention, in which,.- j v n Figure 1, is a side elevation .of thedevice showing the same in operative connection with and inking thetype'of the usual print'- ing and markingk machine. Fig. 2, is a rearelevation of a portion of Fig. 1 showing the mechanismA controlling theink pad. Fig.` 3, is a side elevation of Fig; 2, looking in thedirection indicated by the arrow. Fig. 4;,

is a detail plan lview ofthe mechanism for reversing the movement yofthe ink pad.

. Like characters of reference refer to like parts in the several views.

Referring to Fig. 1, 1 represents the frame of a kprinting and markingmachine having journaled` in the lowerportion thereof the rock-shaft 2carrying the arm .4: secured thereto by theset screw 5 and Vcarrying onthe outer end thereof the usual type-head 6. Journaled in the upper partof the frame 1 is a rock-shaft 3 which carries mounted/on the outer endthereof an arm 7 carrying a holder 25 and ink-pad- 24 reciprocallymounted on the guide rods 26 whichV coperate with grooves in theVbottom. of the holder. 27 is a pinion screw being externally threadedinto the lower part of the arm 7 and'carrying thev screw 28 internallythreaded thereln, the outer end of said screw 28b'eing pinned at 29 tothe pad holder 25.

A movement of the pinion ineither direction operates this compound screwactuating thek padholder 25 and pad-24 in its respective direction. Thispermits the type on typehead to engage the ink-'pad 24 at differentpointsof contact thereon at each inking operation as shown in Fig. 1 andhereinafter described.

The arm 7 has an elongated slot S fitting over Vshaft 3 permitting aslight adjustment of the length of the arm 7 by means of the thumb screw9 thereby allowing the pad )A to engage the type on typehead 6 at asuitable adjustedy pressure. The arm 7 is held in adjusted position onthe shaft 3 by means of alcap l0 which'has a key shaped portion which issplined in a groove in said arm 7. The cap 10 is vsecured, in positionon the shaft 3 by a set screw l1. This spline arrangement readilypermits the lowering orfraising of the arm 7 by means of the thumb screw9 at the same time holding the arm 7 in position.l

, A plunger 141 is reciprocally mounted in the'groove 20 in Vthe arm 7and is held in position therein on one side by the plate 14a screwed ytosaid arm and by the cam 12 whichis loosely mounted onsaid arm 7 andadjustable over the shaft Cani 12`is held in'adjusted position by meansof a screw 17 (see Fig. which is threaded into the framel, the slot 18permitting a slight vertical adjustment of said cam and preventing thesame from turning. The pin 15 driven through the plunger 14 carries onone end a roll 16 held in position-within the cam `track 13 by means -ofa pin 16a.

On lthe opposite end of the pin 15 is a roll 19a which is adapted tooperate in the slot 19 causing theplunger 14, when the arm 7 isoscillated to be yreciprocated during the movement of said arm. 'Thisreciprocation operates a'v link 21 which ispivoted to Vthe plunger 14 at22 and moves a compound pawl 31 which is pivotally mounted on thev stud23 on the lower end of the 'link 21.

32 is a plate pivoted over the sleeve 33 and carries `pivotally mountedtherein the opposite end of the stud 23. A projection 34 dependingy fromthey plate 32 carries a latch 35 pivoted thereto and which is adapted toengage either the upper or lower bev-y eled surfaces of the compoundpawl 31. A

spring 36 secured at one end to a pin 37 on plate 32 and at its oppositeend to a pin 38 on latch 35 serves to hold said latch 35 in a positionin contact with either of the beveled surfaces of the compound pawl 31until the said pawl is shifted in a manner to be hereafter described. YY

A shifting plate 39 is mounted over the stud 23 and securely pinned tothe compound pawl 31, both being held on stud 23 by a pin 40 extendingthrough said stud. The

plate 39 carries two fingers 41 and 42, the

lower finger1 41 being offset from the plane y of the upper finger 42.

A pinion 30 intermeshes with a pinion 27 and is loosely mounted over thesleeve 33, said pinion being held in position by the shifting plate 39.

43 is a rod secured at one end by a pin 44 to the pad holder 25 and isadapted to move within the sleeve 33 simultaneously with the movement ofthe pad holder 25. This rod 43 carries on its extreme outer end a finger45 and intermediate said finger 45 and said pad holder 25 another finger46 adapted to reciprocate within a slot 47 in sleeve 33.

A flat spring 48 secured at one end by a screw 49 to the lower part ofthe arm 7 is indented at its free end and adapted to fall into positionbetween the teeth of the pinion 30 as the same is actuated step by stepby the compound pawl 31. The upper pawl 50 actuates the pinion 30 in onedirection while the lower pawl 51 when thrown into action reverses themovement of the pinion.

The operation of the device is as follows: Prior to each impression ofthe type upon the article to be marked, the rock shaft 3 oscillates andmoves the arm 7 to the position shown in Fig. 1, when the arm 4 movesthe type on the type-head 6 into contact with the inking pad 24. The arm4 is then moved through the medium of the rock shaft 2 away from the inkpad 24 allowing the arm 7 to withdraw the pad 24 from out of the path ofthe type-head 6 when the same de-y scends to make an impression. Thetype in Fig. 1 is shown in contact with the middle of the pad 24 and,.inthel ordinary method of inking, is in continuous contact with the centerof the pad causing a depression to be formed in the same place therebywearing out the pad and also failing to use but a small portion of theink in the pad. In this device the pad is shifted step by step at eachinking operation. Prior to the pad 24 engaging the type, the cam roll 16simultaneously with the upward movement of the arm 7, rises in the camtrack 13 raising the plunger 14 and through link 21 (see Figs. 2 and 3)lifts the pawl 50 which engages one of the teeth of the pinion 30 movingsaid pinion one tooth forward until the spring 48 settles into positionholding the pinion in its adiusted position. rlhis movement acts throughpinion 27 and compound screw 28 to move the holder 25 and pad 24 aslight distance inward. VVhenthe type has been inked and the arm 7 iswithdrawn, the roll 16 reciprocates the plunger 14 and through link 21drops the plate 32 and pawl 50 over the following tooth in the pinion 30then resuming its normal position. This movement is repeated at eachinking operation, the kpad 24 gradually moving inward step by step,exposing a fresh inking surface to the type at each inking operation,until it has reached a position where the finger 46 on rod 43 interceptsthe finger 42 during the downward movement of the link 21 causing thepawl 31 to be thrown backward with the latch 35 engaging its upperbeveled surface. This throws the pawl 50 out of operating contact withthe teeth of pinion 30 and throws the pawl 51 in position to actuate thepinion 30 in the opposite direction at the neXt inking movement therebyreversing the' direction of travel of the pad 24 through the action ofscrew 28 turning in the opposite direction. The pad 24 now continuesthis outward step movement until the finger 45 on rod 43 moves into thepath of and intercepts the offset finger 41 on the next upward movementof the plate 32 again shifting thek compound pawl 31 to the positionshown in Fig. 2. This step movement and reversing of thev pad 24 iscontinued in the manner heretofore described thereby exposing a freshsurface of the pad to the type at each inking operation.

Having thus described our invention and set forth a constructionembodying the same, what we claim as new and desire to secure byvLetters Patent of the United States, is:

1. In an apparatus of the character described, the combination with aswinging type-head of anoscillating holder, an inking pad movablymounted in said holder and adapted to ink the type for each impression,and automatic mechanism adapted to operate upon each oscillationk ofsaid holder to shift the pad to change the line of contact.

of the type thereon with each impression.

2. In'an apparatus of the characterdescribed, the combination with aswinging type-head of an oscillating holder, an independently operatinginking pad movably mounted in said holder and adapted to ink. the typefor each impression, and mechanism adapted to operate upon eachoscillation of said holder for intermittently reciprocating said pad tochange the point of contact of the type thereon with each impression.

3. In an apparatus of the character described, the combination with atype-head of an oscillating holder, a swinging pad movably mounted insaid holder and for inking the type for each impression, means forimparting a step movement to said pad in one direction at. eachoscillation of said holder, and mechanism for reversing the stepmovement of said pad at varied intervals thereby changing each positionof contact Aof the type thereon.

4. In an apparatus of Vthe character described, the combination of atype-head of an oscillating holder carrying a pad Jfor'inking the type,automatic means for shifting the position of the pad in the holder inone direction at each oscillation of said holder, and means Jforshifting the position of the pad in the opposite direction atpre-determined intervals.

5. In an apparatus of the character described, the combination with aswinging type-head of an oscillating holder, a movable pad mounted insaid holder for inking the type for each impression, and automatic meansat each oscillation of said holder for changing the point of contact ofthe type with said pad in one direction on said pad, and for reversingthe direction on said pad whereby the entire inking surface of said padis utilized.

6. yIn an apparatus of the character described, the combination with atype-head of an oscillating holder, a movable pad mounted in said holderadapted to ink the type for each impression, and means adapted to beoperated at each oscillation of said holder to adjust the position ofthe pad to change the point of contact of the type thereon.

7. In an apparatus of the character described, the combination with aswinging type-head of an oscillating holder, a swinging holder, areciprocating pad mounted in said holder and adapted to ink the type forIn testimony whereof we have affixed our signatures, in presence of twowitnesses.

WILLIAM P. EGAN. JOI-IN J. SHEEHAN.

Witnesses:

LoUIs Gr. BARTLETT, FRED. L. NoRRIs.

Copies of this patent may be obtained for five cents each, byaddressing` the Commissioner of Patents, Washington, D. C.

